Service difficulty report · Channel · Boeing 7377K9

Difficulty date
December 4, 2021
Submitted
January 18, 2022
Operation
Air carrier
Aircraft
N7814B
Make and model
Boeing 7377K9
Aircraft serial
30042
Aircraft time
56,070 hours, 29,520 cycles
Part
Channel
Condition
Corroded
Location
Fuselage
Stage of operation
UK
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AFT CARGO COMP L/H BETWEEN STA 747 AND STA 847 ZEE CHANNEL UPPER SURFACE SEVERAL AREA WITH CORROSION. REMOVED CORROSION IAW SRM 51-10-02-0G-0-A00248. PERFORMED UT THICKNESS INSP. ON REWORKED AREA IAW NDT PART 4 51-00-00 PROC. 3. MIN THICKNESS .029'. ORIGINAL MATERIAL 0.040;MATERIAL LOSS 0.011 MATERIAL REMAINING 0.029, OUT OF LIMITS IAW SRM BCG D634A201. FABRICATED NEW ZEE CHANNEL FROM BS 747 TO 847 IAW SRM 53-60-53-01-2 AND DWG 146A7500. MEASUREMENTS INPUT ONLY; [09] STEP 7/8 VERIFIED; OK TO TREAT/PRIME; [10] TREATED AND PRIMED ZEE CHANNEL REF SRM 51-20-01-0G-0 AND AMM 51-21-72-370.

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